The Fox Squirrel is an animal with a squirrel-like body and a fox-like head which first appears in Nausicaä of the Valley of the Wind and then in Laputa: Castle in the Sky and has cameos in other Studio Ghibli films.
The appereance is a mix of cats and kitsunes; like Evoli in Pokémon. In Japan both creatures are lucky charme for its owner. Fox Squirrel are called Kitsunerisu (キツネリス) oder Mammal (マメ) in Japanese.
Nausicaä of the Valley of the Wind Edit
A Fox Squirrel named Teto appears as Nausicaä's pet. Fox Squirrels are wild animals. However, Nausciaä manged to tame Teto.
Laputa: Castle in the Sky Edit
In Laputa: Castle in the Sky, several fox squirrels have befriended the caretaker robot who lives alone on the flying island of Laputa.
When Marnie Was There (Easter Egg)Edit
In When Marnie Was There, a Fox Squirrel appears as a plush stuffed animal.